21370797

素因数分解:

$3^4\times 7^1\times {\mathrm{37691}}^1$

素因数の和:37710

約数の個数: 20

約数和(自身を含む): 36485856

約数和(自身を除く): 15115059

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 37691, 113073, 263837, 339219, 791511, 1017657, 2374533, 3052971, 7123599, 21370797]

約数ペア:

[(1, 21370797), (3, 7123599), (7, 3052971), (9, 2374533), (21, 1017657), (27, 791511), (63, 339219), (81, 263837), (189, 113073), (567, 37691)]